WO2013071684A1 - 直驱电机抽油机 - Google Patents

直驱电机抽油机 Download PDF

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Publication number
WO2013071684A1
WO2013071684A1 PCT/CN2012/000800 CN2012000800W WO2013071684A1 WO 2013071684 A1 WO2013071684 A1 WO 2013071684A1 CN 2012000800 W CN2012000800 W CN 2012000800W WO 2013071684 A1 WO2013071684 A1 WO 2013071684A1
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WIPO (PCT)
Prior art keywords
assembly
guide wheel
truss
pumping unit
permanent magnet
Prior art date
Application number
PCT/CN2012/000800
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English (en)
French (fr)
Inventor
肖文生
崔俊国
董维彬
Original Assignee
中国石油大学(华东)
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Application filed by 中国石油大学(华东) filed Critical 中国石油大学(华东)
Publication of WO2013071684A1 publication Critical patent/WO2013071684A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive

Definitions

  • the invention is a novel oil recovery mechanical device used for oil field oil recovery, and belongs to the field of petroleum machinery technology research. Background technique
  • Mechanical oil recovery is the main oil recovery method on oil ffl.
  • the oil production of the beam pumping unit is dominant.
  • CNPC is using 121,610 sets of conventional beam pumping units.
  • the working principle of the beam pumping unit is the motor passing. After the deceleration of the V-belt reduction gearbox, the rotary motion of the output shaft of the reduction gearbox is changed into the reciprocating motion of the beam boring head by the four-bar linkage mechanism, and the optical rod and the sucker rod are driven by the boring head to make a linear motion of up and down reciprocating, through the sucker rod This movement is then transmitted to the plunger in the downhole pump to pump it.
  • the beam pumping unit due to the shortcomings of the beam pumping unit, such as unreasonable structure, high energy consumption and low power factor, the average system efficiency is only 24%, the oil production cost is high, and the energy consumption has reached 70 billion yuan.
  • Various countries have made a series of attempts to improve the beam pumping unit and the development of the beamless pumping unit.
  • the development of the heterogeneous pumping unit has not solved the problem of the "large horse-drawn carriage", and the energy-saving effect. Not significant; At home and abroad, various forms of long-stroke pumping without beam are developed, but the advantages and disadvantages of these pumping units coexist, which needs further research and improvement.
  • the direct drive motor pumping unit has a streamlined design concept, and has the advantages of simple structure, superior performance, safety and stability, low maintenance cost, high efficiency and energy saving, and is suitable for being popularized in oil fields.
  • a direct drive motor pumping unit consisting of a permanent magnet motor, a sleeve spline coupling, a roller assembly, a guide wheel assembly, a flexible connecting mechanism, a truss assembly,
  • the weight box assembly and the electric hoist are formed, the permanent magnet motor and the roller assembly are located at the top of the truss assembly, the guide wheel assembly is located at the front side of the upper part of the truss assembly, and the flexible connecting mechanism bypasses the roller assembly and the guide wheel assembly at one end and overhangs The rope is connected, and the other end is connected with the weight box assembly.
  • the main features are: The permanent magnet motor is suspended, the permanent magnet motor, the roller assembly and the guide wheel assembly are all fixed by bolts, and the permanent magnet motor and the roller are always The two are directly connected by a sleeve spline coupling.
  • the guide wheel assembly is composed of a guide wheel assembly and a bearing housing assembly.
  • the guide wheel assembly is an integral structure formed by the shaft, the wheel and the ribs.
  • the weight box assembly is located inside the truss assembly, and the weight box total ⁇
  • the center of gravity of the 3 ⁇ 4 coincides with the center of the truss assembly, and the electric hoist is fixed to the inner top of the truss assembly by bolting.
  • the invention has the beneficial effects that the reduction gear box and the reversing mechanism are omitted, the permanent magnet motor directly drives the roller assembly to perform the oil recovery operation, and the permanent magnet motor itself realizes the positive and negative rotation.
  • the invention has a compact overall structure and realizes long stroke; , small footprint, easy maintenance; energy efficient.
  • FIG. 1 is a front elevational view of the present invention, showing the overall structure of a direct drive motor pumping unit and the mounting position and connection relationship of each component.
  • Fig. 2 is a side view of the present invention, showing the overall structure of the direct drive motor pumping unit and the mounting position and connection relationship of each component from another angle.
  • Fig. 3 is a plan view of the present invention, clearly showing the top structure of the direct drive motor pumping unit and the position and connection relationship of each component, and also showing the shape of the direct drive motor pumping unit in the length and width direction.
  • Figure 4 is a front elevational view of the guide wheel assembly, clearly showing the structural composition of the guide wheel assembly.
  • Fig. 5 is an isometric view of the present invention, which more intuitively shows the overall structural relationship of the direct drive motor pumping unit.
  • the truss assembly (6) is the main support structure of the direct drive motor pumping unit.
  • the truss assembly (6) is welded by different types of angle steel and I-beam, and the guide wheel assembly ( 1) Installed on the front side of the upper part of the truss assembly by bolts to allow a certain workover space.
  • the roller assembly (3) is fixed by bolts on the front side of the top of the truss; flexible connecting mechanism (2) bypassing the total
  • the rear end of the (3) and the guide wheel assembly (1) is connected to the suspension rope, the other end is connected to the weight box assembly (7), and the package formed between the flexible connection mechanism (2) and the roller assembly (3)
  • the angle ensures sufficient friction to meet the requirements of the oil recovery operation.
  • the flexible connection mechanism (2) consists of a belt, a rope head, a connector, a lead screw and an elevator; the weight box assembly (7) is placed in the truss assembly (6) Inside, move up and down along the upper rail of the truss assembly (6); the electric hoist (5) is fixedly mounted on the inner top of the truss assembly to lift the weight box assembly (7) and other necessary components.
  • the permanent magnet motor (4) is fixedly mounted on the top of the truss assembly, and the end face is fixedly suspended; the permanent magnet motor (4) is connected to the sleeve spline coupling (8)
  • the roller assembly (3) is directly connected; the roller assembly (3) is mounted on the front side to ensure that the center of gravity of the weight box assembly (7) coincides with the center of the truss assembly (6).
  • the guide wheel assembly (1) is composed of a guide wheel assembly and a bearing housing assembly, and the guide wheel assembly is an integral structure in which the shaft, the wheel and the rib are welded.
  • the overall structure of the direct drive motor pumping unit can be visually seen in Figure 5.

Abstract

一种由永磁电机（4）、套筒花键联轴器（8）、滚轮总成（3）、导轮总成（1）、柔性连接机构（2）、桁架总成（6）、配重箱总成（7）、电动葫芦（5）构成的直驱电机抽油机，柔性连接机构绕过滚轮总成和导轮总成一端与悬绳器连接，另一端与配重箱总成连接；永磁电机为悬挂式安装，永磁电机和滚轮总成通过螺栓固定在桁架总成上，两者之间通过套筒花键联轴器直接连接；导轮总成通过螺栓固定在桁架总成上部前侧。配重箱总成位于桁架总成内部，其重心与桁架总成中心重合，电动葫芦通过螺栓固定在桁架总成内部顶端。该抽油机的有益效果是省去了减速箱和换向机构，永磁电机直接驱动滚轮总成进行采油作业，整体结构紧凑，实现了长冲程；重量轻，占地面积小，维护方便；高效节能。

Description

说 明 书
直驱电机抽油机
技术领域
本发明是用于油田采油方面的一种新型采油机械装置， 属于石油机械技术研究领域。 背景技术
机械采油是油 ffl上主要的采油手段， 其中游梁式抽油机采油占主导地位， 目前中石油集 团在用常规游梁抽油机 121, 610台， 游梁式抽油机工作原理是电动机通过三角皮带减速箱减 速后， 由四连杆机构把减速箱输出轴的旋转运动变为游梁驴头的往复运动， 用驴头带动光杆 和抽油杆作上下往复的直线运动， 通过抽油杆再将这个运动传给井下抽油泵中的柱塞， 使之 工作抽油。 但是由于游梁式抽油机存在着结构不尽合理、 能耗高、 功率因数低等缺点， 系统 平均效率仅为 24%， 采油成本高， 能耗已达 700亿人民币； 为降低成本提高效率， 各国纷纷 就改良游梁式抽油机以及研发无游梁抽油机进行着一系列的尝试， 但研制的异相型抽油机等 仍未解决 "大马拉小车" 的问题， 节能效果不显著； 国内外又先后研制了多种形式的无游梁 长冲程抽油机， 但这些抽油机优缺点并存， 尚待进一步研究与完善。
此外， 随着油田的不断开发， 石油开釆条件变得日益复杂， 采油工艺对有杆抽油设备提 出了长冲程、 低冲次、 大泵深抽等新的要求， 游梁式抽油机在适用性上已经不能满足采油工 艺的要求。
发明内容
为了进一步提高机械采油效率、 节约电能， 满足特殊油藏区块长冲程、 低冲次、 大泵深 抽等开采需求， 促进我国采油装备业的发展， 发明了一种新型抽油机——直驱电机抽油机。 该直驱电机抽油机应用精简的设计理念， 具有结构简单、 性能优越、 安全稳定、 维护成本低、 高效节能等优点， 适宜在油田推广使用。
本发明为解决提出的问题所采用的技术方案是： 直驱电机抽油机由永磁电机、 套筒花键 联轴器、 滚轮总成、 导轮总成、 柔性连接机构、 桁架总成、 配重箱总成、 电动葫芦构成， 永 磁电机和滚轮总成位于桁架总成顶部， 导轮总成位于桁架总成上部前侧， 柔性连接机构绕过 滚轮总成和导轮总成一端与悬绳器连接， 另一端与配重箱总成连接； 其主要特征是： 永磁电 机为悬挂式安装， 永磁电机、 滚轮总成、 导轮总成均通过螺栓连接固定， 永磁电机与滚轮总 成两者之间通过套筒花键联轴器直接连接。 导轮总成由导轮组焊和轴承座总成构成， 导轮组 焊为轴、 轮、 筋板悍接而成的一个整体结构， 配重箱总成位于桁架总成内部， 配重箱总^ ¾的 重心与桁架总成的中心重合， 电动葫芦通过螺栓连接固定在桁架总成内部顶端。 本发明的有益效果是省去了减速箱和换向机构， 永磁电机直接驱动滚轮总成进行采油作 业， 永磁电机自身实现正反转， 该发明整体结构紧凑， 实现了长冲程； 重量轻， 占地面积小， 维护方便； 高效节能。
附图说明
图 1是本发明的主视图， 表示了直驱电机抽油机整体结构和各零部件的安装位置与连接 关系。
图 2是本发明的侧视图， 从另一个角度表示了直驱电机抽油机的整体结构和各零部件的 安装位置与连接关系。
图 3是本发明的俯视图， 清晰地表示了直驱电机抽油机顶部结构以及各零部件的位置与 连接关系， 同时表示出了直驱电机抽油机长宽方向形状。
图 4是导轮总成的正视图， 清晰地表示了导轮总成的结构组成。
图 5是本发明的等轴测图， 更加直观地表示了直驱电机抽油机的整体结构关系。
在图中， 1.导轮总成， 2.柔性连接机构， 3.滚轮总成， 4.永磁电机， 5.电动葫芦， 6.桁 架总成， 7.配重箱总成， 8.套筒花键联轴器。
具体实施方式
下面结合附图进一步阐明本发明的结构与实施方式。
在图 1中可以看出， 桁架总成 （6) 是直驱电机抽油机的主体支撑结构， 桁架总成 （6) 由不同型号的角钢和工字钢焊接而成，导轮总成（1 )通过螺栓固定安装在桁架总成上部前侧， 以让出一定的修井空间， 滚轮总成（3)通过螺栓固定安装在桁架顶部靠前侧； 柔性连接机构 (2) 绕过滚轮总成 （3 ) 和导轮总成 （1 ) 后一端与悬绳器相连， 另一端与配重箱总成 （7 ) 相连， 柔性连接机构 （2) 与滚轮总成 （3 ) 之间形成的包角保证产生足够的摩擦力以满足采 油作业要求， 柔性连接机构 （2) 由皮带、 绳头、 连接器、 丝杠、 吊卡组成； 配重箱总成（7) 置于桁架总成（6) 里面， 沿着桁架总成 （6) 上面的导轨上下运动； 电动葫芦 （5) 固定安装 在桁架总成内部顶端， 用来举升配重箱总成 （7) 以及其他必要零部件。
在图 2和图 3中可以看出， 永磁电机（4) 固定安装在桁架总成顶部， 为端面固定悬挂式 连接； 永磁电机 （4) 通过套筒花键联轴器 （8) 与滚轮总成 （3 ) 直接相连； 滚轮总成 （3) 安装位置靠前侧以保证配重箱总成 （7 ) 的重心与桁架总成 （6) 的中心重合。 在图 4中可以 看出， 导轮总成（1 ) 由导轮组焊和轴承座总成构成， 导轮组焊为轴、 轮、 筋板焊接而成的一 个整体结构。 在图 5可以直观看出直驱电机抽油机的整体结构。

Claims

权 利 要 求 书
1、 一种直驱电机抽油机由永磁电机、 套筒花键联轴器、 滚轮总成、 导轮总成、 柔性连接 机构、 桁架总成、 配重箱总成、 电动葫芦构成， 永磁电机和滚轮总成位于桁架总成顶部， 导 轮总成位于桁架总成上部前侧， 柔性连接机构绕过滚轮总成和导轮总成一端与悬绳器连接， 另一端与配重箱总成连接； 其主要特征是： 永磁电机为悬挂式安装， 永磁电机、 滚轮总成、 导轮总成均通过螺栓连接固定，永磁电机与滚轮总成两者之间通过套筒花键联轴器直接连接。
2、根据权利要求 1所述的直驱电机抽油机， 其特征是导轮总成由导轮组悍和轴承座总成 构成， 导轮组悍为轴、 轮、 筋板悍接而成的一个整体结构。
3、根据权利要求 1所述的直驱电机抽油机， 其特征是配重箱总成位于桁架总成内部， 配 重箱总成的重心与桁架总成的中心重合。
4、根据权利要求 1所述的直驱电机抽油机， 其特征是电动葫芦通过螺栓连接固定在桁架 总成内部顶端。
PCT/CN2012/000800 2011-11-15 2012-06-12 直驱电机抽油机 WO2013071684A1 (zh)

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CN201110371794.9 2011-11-15

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CN107795301A (zh) * 2017-11-28 2018-03-13 青岛新胜石油机械有限公司 紧凑型采油机构及系统
CN111101904A (zh) * 2020-01-19 2020-05-05 胡勇 绞车式无游梁抽油机双机双井互动平衡装置
CN112483047A (zh) * 2020-11-25 2021-03-12 瑞昌市森奥达科技有限公司 直升式抽油机
CN114123715A (zh) * 2020-08-27 2022-03-01 中国石油天然气股份有限公司 抽油机冲次调节装置和油田生产系统

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CN111101904A (zh) * 2020-01-19 2020-05-05 胡勇 绞车式无游梁抽油机双机双井互动平衡装置
CN114123715A (zh) * 2020-08-27 2022-03-01 中国石油天然气股份有限公司 抽油机冲次调节装置和油田生产系统
CN114123715B (zh) * 2020-08-27 2022-12-02 中国石油天然气股份有限公司 抽油机冲次调节装置和油田生产系统
CN112483047A (zh) * 2020-11-25 2021-03-12 瑞昌市森奥达科技有限公司 直升式抽油机
CN112483047B (zh) * 2020-11-25 2022-06-03 瑞昌市森奥达科技有限公司 直升式抽油机

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